Serial garbage using ATmega8, STK500, CodeVisionAVR

What crystal are you using? The baudrate depends on this...

SFC

"Henning M" schreef in bericht news:aba91$43f0d6c4$3e3d8433$ snipped-for-privacy@news.arrownet.dk...

The crystal is a 8.000Mhz

I tried all speeds down to 600 baud with the asme result.. :(

Something else is going wrong!?

Henning

I don't see any code here that actually writes the character to the usart register.

Please post the WHOLE loop.

Are the fuse bits set to run from external crystal? By default I think the chip runs on internal oscillator.

Tom

Setting the fuse to run from an external crystal instead of the (default) internal RC oscillator.

It *is* documented but it is also easy to miss if you don't know to look for it. Would be handy if Atmel included a "boilerplate setup" section that collected all the notes like this, probably somewhere around the section where they detail the typical interrupt vector table.

I have now set up the fuses to run from the external crystal, and found out that a jumper (oscsel) on the STK500 was set up to use the omboard clock generator instead of the crystal. Well it only took 4-5 days to figure out :/

Thanks alot for everybodys help :)

Henning

---- It WORKS----